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Groovy example source code file (ObservableMapTest.groovy)

This example Groovy source code file (ObservableMapTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

bean, groovytestcase, javabean, observablemap, observablemap, observablemaptest, propertychangeevent, propertychangeevent, propertychangelistener, propertychangelistener, samplepropertychangelistener, samplepropertychangelistener

The Groovy ObservableMapTest.groovy source code

/*
 * Copyright 2003-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package groovy.util

import java.beans.PropertyChangeEvent
import java.beans.PropertyChangeListener

/**
 * @author <a href="mailto:aalmiray@users.sourceforge.net">Andres Almiray
 */
class ObservableMapTest extends GroovyTestCase {
   void testFireEvent_withoutTest(){
      def map = new ObservableMap()
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key = 'key'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key] = null
      assertNotNull( propertyListener.event )
      assertTrue( propertyListener.event instanceof ObservableMap.PropertyAddedEvent )
      assertEquals( key, propertyListener.event.propertyName )
      assertNull( propertyListener.event.oldValue )
      assertNull( propertyListener.event.newValue )
      assert sizeListener.event
      assert 0 == sizeListener.event.oldValue
      assert 1 == sizeListener.event.newValue

      sizeListener.event = null
      map[key] = value1
      assertNotNull( propertyListener.event )
      assertEquals( map, propertyListener.event.source )
      assertEquals( key, propertyListener.event.propertyName )
      assertNull( propertyListener.event.oldValue )
      assertEquals( value1, propertyListener.event.newValue )
      assert !sizeListener.event

      map[key] = value2
      assertNotNull( propertyListener.event )
      assertEquals( map, propertyListener.event.source )
      assertEquals( key, propertyListener.event.propertyName )
      assertEquals( value1, propertyListener.event.oldValue )
      assertEquals( value2, propertyListener.event.newValue )
      assert !sizeListener.event

      propertyListener.event = null
      map[key] = value2
      assertNull( propertyListener.event )

   }

   void testFireEvent_removeKey(){
      def map = new ObservableMap()
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key = 'key'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key] = null
      assertNotNull( propertyListener.event )
      assertTrue( propertyListener.event instanceof ObservableMap.PropertyAddedEvent )
      assertEquals( key, propertyListener.event.propertyName )
      assertNull( propertyListener.event.newValue )
      assert sizeListener.event
      assert 0 == sizeListener.event.oldValue
      assert 1 == sizeListener.event.newValue

      sizeListener.event = null
      map[key] = value1
      assertNotNull( propertyListener.event )
      assertEquals( map, propertyListener.event.source )
      assertEquals( key, propertyListener.event.propertyName )
      assertNull( propertyListener.event.oldValue )
      assertEquals( value1, propertyListener.event.newValue )
      assert !sizeListener.event

      map.remove(key)
      assertNotNull( propertyListener.event )
      assertTrue( propertyListener.event instanceof ObservableMap.PropertyRemovedEvent )
      assertEquals( map, propertyListener.event.source )
      assertEquals( key, propertyListener.event.propertyName )
      assertEquals( value1, propertyListener.event.oldValue )
      assert sizeListener.event
      assert 1 == sizeListener.event.oldValue
      assert 0 == sizeListener.event.newValue
   }

   void testFireEvent_clearMap(){
      def map = new ObservableMap()
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key1 = 'key1'
      def key2 = 'key2'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key1] = value1
      map[key2] = value2

      assert sizeListener.event
      assert 1 == sizeListener.event.oldValue
      assert 2 == sizeListener.event.newValue

      map.clear()

      assertNotNull( propertyListener.event )
      assert propertyListener.event instanceof ObservableMap.PropertyClearedEvent
      assertEquals( map, propertyListener.event.source )
      def values = propertyListener.event.values
      assertNotNull( values )
      assertEquals( 2, values.size() )
      assertEquals( value1, values[key1] )
      assertEquals( value2, values[key2] )
      assert sizeListener.event
      assert 2 == sizeListener.event.oldValue
      assert 0 == sizeListener.event.newValue
   }

   void testFireEvent_putAll(){
      def map = new ObservableMap()
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key1 = 'key1'
      def key2 = 'key2'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key1] = null

      assert sizeListener.event
      assert 0 == sizeListener.event.oldValue
      assert 1 == sizeListener.event.newValue

      map.putAll( [key1: value1, key2: value2] )

      assertNotNull( propertyListener.event )
      assert propertyListener.event instanceof ObservableMap.MultiPropertyEvent
      assertEquals( map, propertyListener.event.source )
      assertEquals( 2, propertyListener.event.events.size() )
      assertTrue( propertyListener.event.events[0] instanceof ObservableMap.PropertyUpdatedEvent )
      assertEquals( key1, propertyListener.event.events[0].propertyName )
      assertEquals( value1, propertyListener.event.events[0].newValue )
      assertTrue( propertyListener.event.events[1] instanceof ObservableMap.PropertyAddedEvent )
      assertEquals( key2, propertyListener.event.events[1].propertyName )
      assertEquals( value2, propertyListener.event.events[1].newValue )

      assert sizeListener.event
      assert 1 == sizeListener.event.oldValue
      assert 2 == sizeListener.event.newValue
   }

   void testFireEvent_withTest(){
      def map = new ObservableMap( { it != 'value2' } )
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key = 'key'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key] = value1
      assertNotNull( propertyListener.event )
      assertEquals( map, propertyListener.event.source )
      assertEquals( key, propertyListener.event.propertyName )
      assertEquals( value1, propertyListener.event.newValue )

      propertyListener.event = null
      map[key] = value2
      assertNull( propertyListener.event )
   }

   void testFireEvent_withTestOnKey(){
      def map = new ObservableMap( { name, value -> name != 'key' } )
      def propertyListener = new SamplePropertyChangeListener()
      map.addPropertyChangeListener( propertyListener )
      def sizeListener = new SamplePropertyChangeListener(false)
      map.addPropertyChangeListener( ObservableMap.SIZE_PROPERTY, sizeListener )

      def key = 'key'
      def value1 = 'value1'
      def value2 = 'value2'
      map[key] = value1
      assertNull( propertyListener.event )
      map[key] = value2
      assertNull( propertyListener.event )

      map['key2'] = value1
      assertNotNull( propertyListener.event )
      assertEquals( map, propertyListener.event.source )
      assertEquals( 'key2', propertyListener.event.propertyName )
      assertEquals( value1, propertyListener.event.newValue )
   }
}

class SamplePropertyChangeListener implements PropertyChangeListener {
   PropertyChangeEvent event
   private final boolean skip

   SamplePropertyChangeListener() {
       this(true)    
   }

   SamplePropertyChangeListener(boolean skip) {
      this.skip = skip;    
   }

   public void propertyChange( PropertyChangeEvent evt ) {
      if(skip && evt.propertyName in [ObservableMap.SIZE_PROPERTY]) return
      event = evt
   }
}

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